The idea was stupid because of the pipe but not because of being able to breath. If we could avoid to crash the trachea and then cause more pain + suffocation before we fall into unconsciousness, it would be great ! There is enough terrible pain with the whole weight of the body suddenly on the neck and even if it's a matter of 12-20 seconds (sometimes more), it's violent. With partial suspension, trachea is protected even when carotids are blocked, there is no suffocation. Protecting the trachea during full suspension would be a good idea, but how ? I remember it was once question of a double ring to put on the rope, in the front of the neck, to protect the trachea and if it was usable for full suspension too, why not ? The problem, this double ring question was not clearly explained anywhere.